What Does a Refrigerator's Crisper Drawer Actually Do?

Also, here's a list of things you should and shouldn't store in it

This is my final week of living in NYC, and it's been nonstop packing. Yesterday I cleaned out my 'fridge, and wondered: What the hell does the crisper drawer actually do? The name would suggest it keeps things crisp, but how does a transparent plastic drawer do that?

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I poked around and found foodie website The Takeout, which consulted industry experts to provide the answer:

Carolina Biotti, Whirlpool's global food preservation scientist, tells The Takeout that thin-skinned and leafy produce like spinach, strawberries, and lettuce, are best stored in high humidity environments…. So the main goal of the fruit and veggie crisper drawers is to keep certain produce humid and happy.

But refrigerators don't actually create humidity; they harness it.

"Food already has moisture trapped inside it and releases that into the air. In a crisper drawer, you're putting the food in an enclosed space where the humidity can't escape," says Chris Thornton, senior manager of product training at Samsung.

The entry also points out that tomatoes and onions oughtn't go in the crisper, as they last longer in dry air. Which means I have been storing tomatoes incorrectly for years. (Yesterday I threw out four of them.)

"Storage Tomatoes came originally from a warm climate, and should be stored at room temperature. Their fresh flavor readily suffers from refrigeration. Tomatoes at the mature-green stage are especially sensitive to chilling at temperatures below about 55°F/13°C, and suffer damage to their membranes that results in minimal flavor development, blotchy coloration, and a soft, mealy texture when they're brought back to room temperature. Fully ripe tomatoes are less sensitive, but lose flavor due to the loss of flavor-producing enzyme activity. Some of this activity can come back, so refrigerated tomatoes should be allowed to recover at room temperature for a day or two before eating."Excerpt From: Harold McGee. "On Food and Cooking."